Merge pull request #75 from schrom01/fix_imageLoad_M3

fixed image loading when app is packed as jar

src/main/java/ch/zhaw/gartenverwaltung/json/PlantImageDeserializer.java

@@ -21,13 +21,9 @@ public class PlantImageDeserializer extends JsonDeserializer<Image> {
     @Override
     public Image deserialize(JsonParser parser, DeserializationContext context) throws IOException {
         Image result = null;
-        URL imageUrl = PlantList.class.getResource(String.format("images/%s", parser.getText()));
-        if (imageUrl != null) {
-            try (InputStream is = new FileInputStream(new File(imageUrl.toURI()))) {
+        InputStream is = PlantList.class.getResourceAsStream(String.format("images/%s", parser.getText()));
+        if (is != null) {
             result = new Image(is);
-            } catch (IllegalArgumentException | URISyntaxException e) {
-                throw new IOException(String.format("Cannot find Image \"%s\"\n", imageUrl.getFile()));
-            }
         }
         return result;
     }